Especially with older paint, fine dirt collects in the pores of the paint over time. This dirt can often not be removed completely with classic car shampoos. Perceptible sediments on the paint surface (e.g. insect or resin residue, fl ash rust and the like) can be removed gently with Porsche cleaning clay. Especially before applying coating polish, a thorough and in-depth basic cleaning the paint surface is the prerequisite for the subsequent polishing.